Finding the Fourth Proportional to 1,314.56, 1,970.52 and 448.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.56 : 1,970.52 = 448.28 : x
2. Step 2: Convert to fraction form
   1,314.56/1,970.52 = 448.28/x
3. Step 3: Cross multiply
   1,314.56x = 1,970.52 × 448.28
4. Step 4: Simplify right side
   1,314.56x = 883,344.71
5. Step 5: Solve for x
   x = 883,344.71/1,314.56
6. Step 6: Final answer
   x = 671.97